Class 8 Exam > Class 8 Videos > Science Class 8 > Microorganisms as Our Friends
Microorganisms as Our Friends Video Lecture | Science Class 8
|
91 videos|273 docs|44 tests
|
FAQs on Microorganisms as Our Friends Video Lecture - Science Class 8
| 1. What are microorganisms and why are they considered our friends? |  |
Ans. Microorganisms are tiny living organisms that are not visible to the naked eye, such as bacteria, viruses, fungi, and protozoa. They are considered our friends because they play important roles in our daily lives. For example, some microorganisms are used in the production of food and beverages like cheese, yogurt, and bread. They also help in the breakdown of organic matter and recycle nutrients in the environment. Additionally, microorganisms are used in medicine to produce antibiotics and other drugs that help combat diseases.
| 2. How do microorganisms benefit us in agriculture? | |
Ans. Microorganisms play a crucial role in agriculture. They help in decomposing organic matter, such as dead plants and animals, and release nutrients into the soil. This process is called decomposition. Microorganisms like bacteria and fungi also form a symbiotic relationship with plants, providing them with essential nutrients like nitrogen. Some microorganisms, such as Rhizobium bacteria, form nitrogen-fixing nodules on the roots of leguminous plants, enabling them to convert atmospheric nitrogen into a usable form for plants. Overall, microorganisms contribute to soil fertility, plant growth, and crop productivity in agriculture.
| 3. Can microorganisms harm us? | |
Ans. While many microorganisms are beneficial, some can indeed harm us. Pathogenic microorganisms, such as certain bacteria, viruses, and fungi, can cause diseases in humans and animals. These diseases range from common infections like the flu or a cold to more severe illnesses like tuberculosis or AIDS. It is important to maintain good hygiene practices, such as washing hands regularly, to prevent the transmission of harmful microorganisms. Additionally, proper food handling and preparation can help minimize the risk of foodborne illnesses caused by microorganisms.
| 4. How are microorganisms used in wastewater treatment? | |
Ans. Microorganisms play a vital role in wastewater treatment processes. In the initial stages, microorganisms are used to break down organic matter in the wastewater into simpler compounds. This process is called biodegradation. Bacteria and other microorganisms help convert organic pollutants into carbon dioxide, water, and other harmless substances. In the later stages, microorganisms like algae are employed to remove nutrients like nitrogen and phosphorus from the wastewater through a process called biological nutrient removal. Overall, microorganisms help in purifying wastewater and making it safe for release into the environment.
| 5. What are some examples of beneficial microorganisms in our bodies? | |
Ans. Our bodies harbor a wide range of beneficial microorganisms that contribute to our overall health. These include the gut microbiota, which consists of various bacteria and fungi that aid in digestion, nutrient absorption, and the synthesis of vitamins. Some bacteria also help in the production of short-chain fatty acids that provide energy to the cells lining our intestines. Additionally, certain beneficial bacteria help in boosting our immune system and protecting us from harmful pathogens. Examples of such bacteria include lactobacilli and bifidobacteria, which are commonly found in probiotic foods and supplements.
About this Video
|
4.89/5 Rating |
|
Nov 21, 2024 Last updated |
Video Description: Microorganisms as Our Friends for Class 8 2024 is part of Science Class 8 preparation.
The notes and questions for Microorganisms as Our Friends have been prepared according to the Class 8 exam syllabus.
Information about Microorganisms as Our Friends covers all important topics for Class 8 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Microorganisms as Our Friends.
Introduction of Microorganisms as Our Friends in English is available as part of our Science Class 8 for Class 8 & Microorganisms as Our Friends in
Hindi for Science Class 8 course. Download more important topics related with notes, lectures and mock test series for
Class 8 Exam by signing up for free.
Description
Video Lecture & Questions for Microorganisms as Our Friends Video Lecture | Science Class 8 - Class 8 full syllabus preparation | Free video for Class 8 exam to prepare for Science Class 8.
Information about Microorganisms as Our Friends
Here you can find the meaning of Microorganisms as Our Friends defined & explained in the simplest way possible.
Besides explaining types of Microorganisms as Our Friends theory, EduRev gives you an ample number of questions to practice Microorganisms as Our Friends tests,
examples and also practice Class 8 tests.
|
91 videos|273 docs|44 tests
|
|
Explore Courses for Class 8 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Microorganisms as Our Friends Video Lecture | Science Class 8
,Summary
,Extra Questions
,Free
,Previous Year Questions with Solutions
,Viva Questions
,practice quizzes
,MCQs
,past year papers
,Exam
,Microorganisms as Our Friends Video Lecture | Science Class 8
,shortcuts and tricks
,video lectures
,Sample Paper
,Objective type Questions
,Microorganisms as Our Friends Video Lecture | Science Class 8
,study material
,ppt
,Semester Notes
,mock tests for examination
,Important questions
;
Study Microorganisms as Our Friends on the App
Students of Class 8 can study Microorganisms as Our Friends alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Microorganisms as Our Friends,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Microorganisms as Our Friends is prepared as per the latest Class 8 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup